Autumn care for hydrangeas is crucial for preserving the health of this beloved shrub if gardeners wish to see abundant, vibrant blooms during the summer months. While numerous varieties exist, each requiring slightly different maintenance, certain fundamental autumn principles apply to all.
In an exclusive conversation with Express.co.uk, expert florist and former RHS Chelsea Flower Show gold medallist David Denyer shared his knowledge to help gardeners celebrate hydrangea beauty 'all year long', ensuring they 'thrive even when the temperatures drop'. He outlined several methods to maximise hydrangea potential, with one being 'particularly important' for achieving plants that are 'bouncing back come next spring'.
Moisture remains something upon which hydrangeas depend enormously, and autumn and winter's cold conditions do not alter this requirement. Providing deep, regular watering is essential as these are naturally parched plants. David said: 'These plants are famous for their large, showy blooms, which require a lot of moisture. So, before winter sets in, give your hydrangeas a good drink - thorough watering before the ground freezes ensures that the plants are well-hydrated going into the colder months. This is particularly important as hydrangeas enter dormancy, as a well-watered plant is much better equipped to handle the stress of winter.'
Therefore, saturate the earth surrounding them thoroughly, ensuring water penetrates to their root system. The specialist emphasised: 'This simple step can make a noticeable difference in how your hydrangeas weather the winter and bounce back come next spring with larger blooms.'
Mulching represents another 'crucial step' in safeguarding hydrangeas throughout the colder months. David recommended using organic materials like shredded leaves, pine bark, or wood chips. He explained: 'Applying a thick layer of mulch - about two to three inches - around the base of your hydrangeas can help protect their roots from freezing temperatures. Just make sure to keep the mulch a few inches away from the stems themselves to prevent moisture from building up against them, which can lead to rot.'
